In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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When dragonflies mate, their tails form a love heart.
22
One litter of kittens can be produced by more than one father.
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A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
When cats are happy, they may squeeze their eyes shut.
10
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
Sea otters hold hands while sleeping so they don’t drift away from each other.
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